# Command line Inspect the installed Cambium server and its sibling MCP executable. The Cambium executable serves the application and launches its sibling MCP server. Maintenance commands operate on a stopped store. ## Inspect and check Cambium — messaging, projects and voice, one binary. ```text cambium [OPTIONS] [COMMAND] ``` Print the version and source commit of the executable. ```text cambium --version ``` Read the configuration and report the boot plan without opening the store. ```text cambium --check --config ``` - `--config `: An explicit TOML configuration file. If omitted, the platform data directory supplies its location. Check the installed MCP executable, fonts and native canvas without signing in. ```text cambium mcp --check ``` ## Serve people and agents Boot the server and serve until SIGINT or SIGTERM ```text cambium serve [OPTIONS] ``` Start the MCP server beside the installed Cambium executable. ```text CAMBIUM_MCP_SEAT= cambium mcp ``` - `CAMBIUM_MCP_SEAT`: Absolute path to the private seat file. Keep its contents out of launcher configuration and logs. Serving is a foreground operation ended by an operating-system signal. ## Maintain a stopped installation Copy a STOPPED store, its node and its keys into `//`. ```text cambium backup [OPTIONS] --to ``` - `--to `: Directory the stamped snapshot is created under. Settle every diverged connection promotion plan of a STOPPED store to one consistent state, and print one line per plan settled. ```text cambium settle-promotions [OPTIONS] ``` Switch a STOPPED server's sign-in issuer to its link-only target. ```text cambium cutover [OPTIONS] ``` These are deliberate maintenance operations. Read their installed help and the named preconditions before planning one.